terminology vs nomenclature

terminology and nomenclature both are nouns.

Word	Noun	Adjective	Verb	Adverb
terminology	Yes	No	No	No
nomenclature	Yes	No	No	No

As nouns, terminology and nomenclature are synonyms defined as:

terminology and nomenclature: a system of words used to name things in a particular discipline

Other synonyms of terminology include language.

terminology (noun)	nomenclature (noun)
a system of words used to name things in a particular discipline	a system of words used to name things in a particular discipline